Research

Journals

Journal of Kim Il Sung University (NATURAL SCIENCE)
Vol.3 No.2 Juche103(2014).

Condition for Alkali Molten Decomposition of Zircon
  Ri Song Ho, Pak Se Ok and Chae Yong Suk
Improvement of Operative Method for Ranula
  Ri Nam Gil, Song Chun Hui and So Hyon Il